Home / 638,776,918.62-958,502,960.10-453,229,987.68

Finding the Fourth Proportional to 638,776,918.62, 958,502,960.10 and 453,229,987.68

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Solution

The fourth proportional to 638,776,918.62, 958,502,960.10 and 453,229,987.68 is: 680,084,505.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,776,918.62 : 958,502,960.10 = 453,229,987.68 : x
  2. Step 2: Convert to fraction form
    638,776,918.62/958,502,960.10 = 453,229,987.68/x
  3. Step 3: Cross multiply
    638,776,918.62x = 958,502,960.10 × 453,229,987.68
  4. Step 4: Simplify right side
    638,776,918.62x = 434,422,284,797,366,528
  5. Step 5: Solve for x
    x = 434,422,284,797,366,528/638,776,918.62
  6. Step 6: Final answer
    x = 680,084,505.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.